One new (the 9th Star Bonus) is unlocked by reaching 555 stars.
Princess Leia is officially introduced in this episode, using her gravitational pull ability to manipulate the environment and topple Imperial Pig structures. Bonus Content: angry-birds-star-wars-1-2-0-full-patch
A new hidden (the 8th) can be found within the Cloud City levels. Version Technical Details Episode Added Cloud City (Part 1) New Levels 20 standard + 10 Boba Fett + 2 Bonus Release Date March 28, 2013 (Mobile) Platforms iOS, Android, PC, Mac One new (the 9th Star Bonus) is unlocked
These missions can be unlocked by finding all 5 hidden jetpacks scattered throughout other episodes or via a one-time in-app purchase. 2013 (Mobile) Platforms iOS